SPOILER ALERT: This story includes details about the Season 5 finale of Nashville.Nashville wrapped its fifth season — and first on CMT — tonight with a finale in which the battle for the future of Highway 65 came to a head with Zach effectively shutting it down by draining the label’s bank accounts. Deacon, whose angry outbursts had cost him dearly in the past, was the picture of calm in his face-off with the arrogant tech wiz Zach and talked some sense into him about…Deadline